洞岡第一號コークス爐の再開に就て
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概要
- 論文の詳細を見る
The Kukioka No.1 coke oven (Nittetsu compound type having 75 retorts) was first put to operation on August 5, 1941. It was compelled to suspend its function and to cool down since the airraid of August 8, 1945 through the subsequent postwar confusions. Damages worth special mention about the oven condition at that time were that in some places the chamber wall was bent in one direction (at the worst spot expanding outward by no less than 105 mm.) and that more than 15 retorts were not working normally. Maintenance during the time of suspension was not satisfactory. Having passed three winters before resuming the operation on July 23, 1949, the bricks of the oven body had considerably got wet through. A survey of the bricks showed that, although they had deteriorated to a certain degree, they were not unfit for continued use. For the resumption of the oven operation, no renovation at all was made on the cracks in the oven body or the brick bonding ; in other words no pointing up with mortar was done at all. No repair work was conducted inside the regenerator either. As regards the combustion chambers whose walls had been bent, 6 of them (12 chambers) were thoroughly repaired and dried before starting the oven operation again. The result is quite satisfactory in the general tone of operation, including the oven condition after drying, the spread of oven temperature when the blast furnace gas is used for heating, throughout its pig-steel processes.
- 社団法人日本鉄鋼協会の論文
- 1951-01-25